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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package propagation_test
import (
"context"
"net/http"
"testing"
"go.opentelemetry.io/otel/propagation"
"go.opentelemetry.io/otel/trace"
)
func BenchmarkInject(b *testing.B) {
var t propagation.TraceContext
injectSubBenchmarks(b, func(ctx context.Context, b *testing.B) {
h := http.Header{}
b.ResetTimer()
for i := 0; i < b.N; i++ {
t.Inject(ctx, propagation.HeaderCarrier(h))
}
})
}
func injectSubBenchmarks(b *testing.B, fn func(context.Context, *testing.B)) {
b.Run("SampledSpanContext", func(b *testing.B) {
b.ReportAllocs()
sc := trace.NewSpanContext(trace.SpanContextConfig{
TraceID: traceID,
SpanID: spanID,
TraceFlags: trace.FlagsSampled,
})
ctx := trace.ContextWithRemoteSpanContext(context.Background(), sc)
fn(ctx, b)
})
b.Run("WithoutSpanContext", func(b *testing.B) {
b.ReportAllocs()
ctx := context.Background()
fn(ctx, b)
})
}
func BenchmarkExtract(b *testing.B) {
extractSubBenchmarks(b, func(b *testing.B, req *http.Request) {
var propagator propagation.TraceContext
ctx := context.Background()
b.ResetTimer()
for i := 0; i < b.N; i++ {
propagator.Extract(ctx, propagation.HeaderCarrier(req.Header))
}
})
}
func extractSubBenchmarks(b *testing.B, fn func(*testing.B, *http.Request)) {
b.Run("Sampled", func(b *testing.B) {
req, _ := http.NewRequest("GET", "http://example.com", nil)
req.Header.Set("traceparent", "00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01")
b.ReportAllocs()
fn(b, req)
})
b.Run("BogusVersion", func(b *testing.B) {
req, _ := http.NewRequest("GET", "http://example.com", nil)
req.Header.Set("traceparent", "qw-00000000000000000000000000000000-0000000000000000-01")
b.ReportAllocs()
fn(b, req)
})
b.Run("FutureAdditionalData", func(b *testing.B) {
req, _ := http.NewRequest("GET", "http://example.com", nil)
req.Header.Set("traceparent", "02-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-09-XYZxsf09")
b.ReportAllocs()
fn(b, req)
})
}
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